Edward O'Callaghan | 1fcb40b | 2009-08-05 19:06:50 +0000 | [diff] [blame] | 1 | /* ===-- ucmpti2.c - Implement __ucmpti2 -----------------------------------=== |
| 2 | * |
| 3 | * The LLVM Compiler Infrastructure |
| 4 | * |
Howard Hinnant | 9ad441f | 2010-11-16 22:13:33 +0000 | [diff] [blame] | 5 | * This file is dual licensed under the MIT and the University of Illinois Open |
| 6 | * Source Licenses. See LICENSE.TXT for details. |
Edward O'Callaghan | 1fcb40b | 2009-08-05 19:06:50 +0000 | [diff] [blame] | 7 | * |
| 8 | * ===----------------------------------------------------------------------=== |
| 9 | * |
| 10 | * This file implements __ucmpti2 for the compiler_rt library. |
| 11 | * |
| 12 | * ===----------------------------------------------------------------------=== |
| 13 | */ |
Daniel Dunbar | b3a6901 | 2009-06-26 16:47:03 +0000 | [diff] [blame] | 14 | |
Daniel Dunbar | b3a6901 | 2009-06-26 16:47:03 +0000 | [diff] [blame] | 15 | #include "int_lib.h" |
| 16 | |
Chandler Carruth | 7f2d7c7 | 2012-06-22 21:09:22 +0000 | [diff] [blame^] | 17 | #if __x86_64 |
| 18 | |
Edward O'Callaghan | 1fcb40b | 2009-08-05 19:06:50 +0000 | [diff] [blame] | 19 | /* Returns: if (a < b) returns 0 |
| 20 | * if (a == b) returns 1 |
| 21 | * if (a > b) returns 2 |
| 22 | */ |
Daniel Dunbar | b3a6901 | 2009-06-26 16:47:03 +0000 | [diff] [blame] | 23 | |
| 24 | si_int |
| 25 | __ucmpti2(tu_int a, tu_int b) |
| 26 | { |
| 27 | utwords x; |
| 28 | x.all = a; |
| 29 | utwords y; |
| 30 | y.all = b; |
Edward O'Callaghan | aabd961 | 2009-09-03 09:12:20 +0000 | [diff] [blame] | 31 | if (x.s.high < y.s.high) |
Daniel Dunbar | b3a6901 | 2009-06-26 16:47:03 +0000 | [diff] [blame] | 32 | return 0; |
Edward O'Callaghan | aabd961 | 2009-09-03 09:12:20 +0000 | [diff] [blame] | 33 | if (x.s.high > y.s.high) |
Daniel Dunbar | b3a6901 | 2009-06-26 16:47:03 +0000 | [diff] [blame] | 34 | return 2; |
Edward O'Callaghan | aabd961 | 2009-09-03 09:12:20 +0000 | [diff] [blame] | 35 | if (x.s.low < y.s.low) |
Daniel Dunbar | b3a6901 | 2009-06-26 16:47:03 +0000 | [diff] [blame] | 36 | return 0; |
Edward O'Callaghan | aabd961 | 2009-09-03 09:12:20 +0000 | [diff] [blame] | 37 | if (x.s.low > y.s.low) |
Daniel Dunbar | b3a6901 | 2009-06-26 16:47:03 +0000 | [diff] [blame] | 38 | return 2; |
| 39 | return 1; |
| 40 | } |
| 41 | |
| 42 | #endif |